#!/usr/bin/env node
const Koa=require('koa'),
      log=console.log;
const app=new Koa();
app.use((ctx,next)=>{  //M-logger
  //parse req
  log(`${ctx.method} ${ctx.path}`);
  next();  
});
app.use((ctx,next)=>{ //M-ms
  const start=Date.now();
  next();
  const end=Date.now();
  log(`cost:${end-start}ms`);
});
app.use((ctx,next)=>{ //M-hello
  ctx.body='hello koa';
});
app.listen(8080);

